Weird sound when I drive?

So recently I drove my 1998 honda accord with the 3.0 v6 engine and I hear a noise that sounds like a bicycle with a card hitting the back wheel. I've checked if my tires are hitting anything but its all clear. The noise is consistent with the speed and not the rpm's. Any idea what it is?

It means your radio's not up loud enough.

Sounds like you might have a screw, nail or something in one of your tires.